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<condition> Tag is similar to switch statements in programming language. It helps ALICE to respond to the matching input.

Syntax

<condition name = "variable-name" value = "variable-value"/>

For example, consider the following conversation.

Human: How are you feeling today
Robot: I am happy!

Here we’ve stored happy as the state of ALICE and that is how it responds as “I am happy!”.

Example

Create condition.aiml inside C > ab > bots > test > aiml and condition.aiml.csv inside C > ab > bots > test > aimlif directories.

condition.aiml

<?xml version = "1.0" encoding = "UTF-8"?>
<aiml version = "1.0.1" encoding = "UTF-8"?>
   <category>
      <pattern> HOW ARE YOU FEELING TODAY </pattern>
      
      <template>
         <think><set name = "state"> happy</set></think>
         <condition name = "state" value = "happy">
            I am happy!
         </condition>
         
         <condition name = "state" value = "sad">
            I am sad!
         </condition>
      </template>
      
   </category>
</aiml>

condition.aiml.csv

0,HOW ARE YOU FEELING TODAY,*,*,
   <think>
      <set name = "state"> happy</set>
   </think>
   
   <condition name = "state" value = "happy">I am happy!</condition>
   <condition name = "state" value = "sad">I am sad!</condition>,condition.aiml

Execute the Program

Open the command prompt. Go to C > ab > and type the following command −

java -cp lib/Ab.jar Main bot = test action = chat trace = false

Verify the Result

You will see the following output −

Human: How are you feeling today
Robot: I am happy!